Chemically strengthened glass fractures into chips with hackle-barbed, acutely pointed edges. These barbed edges act like microscopic fishhooks, readily snagging on fabric—especially knit fabrics.
A jersey knit is not a flat surface but a three-dimensional structure of interlocked yarn loops. Each loop forms an arch that stands slightly proud of the fabric plane, leaving an open void beneath it. The glass barbs penetrate these voids and catch on the yarn arches.
This mechanical attachment is greatly enhanced when the jersey knit is stretched. Under tension, the loops open, allowing the barbs to embed more deeply into the voids. As the fabric relaxes, the loops contract and tighten around the barbs, trapping the glass fragments inside the knit structure.
In short, glass fragments that contact the jersey knit at the moment of maximum stretch become mechanically locked in place once the fabric returns to its resting state.
American Buddhist Net 